MMSE detection for high data rate UWB MIMO systems
MMSE detection for high data rate UWB MIMO systems
复制标题
高数据速率 UWB MIMO 系统的 MMSE 检测
DOI：
10.1109/vetecf.2004.1400266
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
A. Madhukumar
中科院分区：
文献类型：
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作者：
Zhiwei Lin;B. Premkumar;A. Madhukumar
本文给出了采用跳时扩频（THSS）和直接序列扩频（DSSS）方法的超宽带（UWB）多输入多输出（MIMO）系统的统一矩阵表示。在室内密集多径环境下，研究了高数据速率超宽带传输的码间干扰。基于最小均方误差（MMSE）检测准则对系统的误比特率（BER）性能进行了评估。此外，一个简化的UWB MIMO信道模型假设的性能分析的基础上，IEEE 802.15.3a信道模型建议和MIMO信道协方差矩阵表示。结果表明，超宽带MIMO系统与THSS方法是能够提供有前途的性能非常高的符号率传输的短距离。另一方面，由于除了ISI之外还存在严重的码间干扰（ICI），采用DSSS方法的UWB MIMO系统更容易受到高符号率传输的影响。
In this paper, a uniform matrix representation for ultra-wideband (UWB) multiple-input multiple-output (MIMO) systems with time-hopping spread spectrum (THSS) and direct-sequence spread spectrum (DSSS) methods is formulated. The inter symbol interference (ISI) is considered for high data rate UWB transmissions in the presence of dense multipath in an indoor environment. The bit error rate (BER) performance is evaluated based on the minimum mean square error (MMSE) detection criterion. In addition, a simplified UWB MIMO channel model is assumed for performance analysis based on the IEEE 802.15.3a channel model recommendation and the MIMO channel covariance matrix representations. Results show that a UWB MIMO system with THSS method is capable of delivering promising performance up to very high symbol rate transmission for short range. On the other hand, a UWB MIMO system with DSSS method is more vulnerable to high symbol rate transmission due to the existence of severe inter chip interference (ICI) in addition to ISI.
DOI：
10.1109/vetecf.2000.886625
发表时间：
2000-09
期刊：
Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152)
影响因子：
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作者：
J. Kermoal;Laurent Schumacher;P. Mogensen;Klaus I. Pedersen
通讯作者：
J. Kermoal;Laurent Schumacher;P. Mogensen;Klaus I. Pedersen